On — source tallied on the MultiViewer based on the TSL input. TSL
mnemonic source names are used.

Tally Only — source
tallied on the MultiViewer based on the TSL input. TSL mnemonic source names are not
used.

Note: If a TSL ID is assigned to a source, the switcher overwrites the source name on the MultiViewer and mnemonics with the TSL name. If
there is no TSL name, or it has not been received yet, the source name is blank. For the labels on the MultiViewer, a combination of the TSL name and switcher source name are used. The new TSL name is passed
from the switcher to any downstream TSL devices.